Too Long; Didn't Read
Consensus is a concept that is central to any distributed, or distributed, system. In a decentralized system, all decisions are made by a central authority figure or a board of decision-makers. This is where the concept of consensus is of utmost importance — only through such a group decision-making process where group members develop, and agree to support a decision in the best interest of the whole, can anything in the blockchain get done. But how can such consensus be achieved without a dedicated and central third party to oversee such a tenuous operation? We are talking about helping an unlimited number of trustless users come to consensus here.